Ok, so I have a 2010 Cooper S (turbo) and it's throwing codes...
-P0300 (random cylinder misfire detected)
-P0302 (cylinder #2 misfire)
-P0304 (cylinder #4 misfire)


When the check engine light came on, nothing changed with the way the car was running, which is kind of has me confused. I know usually when cars have a misfire, they turn into a Subaru by sound lol.. With all the other issues I could find like this, they were all saying the car was running really rough. Mine is driving completely normal. Most cases I've seen have been the coil packs/plugs.


Questions: What's the likely hood that two cylinders failing at once? Could this be something else? Is it possible that two of my injectors are clogged?


Any and all help is appreciated.. Thanks

 

First how many miles are on your Mini? Second have you ever had the intake valves walnut blasted by dealer? Reason I ask is because of our MCS's being direct injection engines the valves get coked with oily deposits and these deposits will cause misfiring, typically you should have your intake valves walnut blasted every 30,000-50,000 miles depending if you're in stop and go traffic or mostly highway mileage. Sorry for not being able to provide any code info.

 

I would check the coils/ plugs as well